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Tropical Storm Vicente (09W) South-Southeast of Hong Kong

18.3N 114.6E

July 23rd, 2012 Category: Tropical Storms

Tropical Storm Vicente (09W) – July 23rd, 2012

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Track of TS09W - July 23rd, 2012 © Univ. of Wisconsin

Track of TS09W

After passing over the Philippines (click here for previous images),  Tropical Storm Vicente (09W), is now located approximately 150 nm south-southeast of Hong Kong. The system has tracked north-northwestward at 06 knots over the past six hours. Maximum significant wave height is 19 feet.

Tropical Storm Vicente (09W) Causes Problems in Philippines

17.0N 120.7E

July 22nd, 2012 Category: Tropical Storms

Tropical Storm Vicente (09W) – July 21st, 2012

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Track of TS09W - July 21st, 2012 © Univ. of Wisconsin

Track of TS09W

After Khanun became a tropical storm on July 16, its large area of convention associated with a tropical wave in the south began to split, and it transformed into a tropical disturbance on July 17. The JMA upgraded the system to a tropical depression on July 18 (click here for previous image).

On July 20, the tropical depression became better organized; however, due to moderate vertical wind shear, and dry air coming from the north of the system, the low level circulation center became exposed, as it developed three multiple circulation centers. Later that day, the JTWC issued a TCFA on the system, and the PAGASA upgraded it to tropical depression Ferdie. Late on the same day, the JTWC upgraded the system to a tropical depression.

On July 21, the JMA upgraded the system to a tropical storm and named it Vicente, so did the JTWC later on the same day, as the system’s convection finally wrapped around the storm’s center of circulation.

The depression caused widespread rains and gusty winds in Luzon and Visayas region due to the enhancement of southwest monsoon. Excesses of aproximately 40 mm/hr rainfall were recorded under the 400 diameter of the depression. On July 20, classes were suspended from pre-school to high school level due to heavy rain and severe flooding. Some were stranded in their offices and residents were advised to seek in higher ground. Gale warnings were also released. About 2 people have been reported dead and 6 others are officially missing.

Typhoon Kompasu (08W) and Tropical Storms Namtheun and Lionrock

29.0N 129.6E

August 31st, 2010 Category: Tropical Cyclones, Tropical Storms

Typhoon Kompasu (08W) - August 30th, 2010

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Track of TY 08W - August 30th, 2010 © Univ. of Wisconsin

Track of TY 08W

Upon opening the full image, Typhoon Kompasu (08W) can be seen between Japan (north) and the Philippines (south). In the animated image, Kompasu is the system to the right, whose track is marked; also visible to the left in the full version are Tropical Storm Namtheun (09W) and Tropical Storm Lionrock (07W).

Typhoon Kompasu began as an area of low pressure that formed on August 27th, about 305 km (200 mi) to the east of the island of Yap. At that time, the system was disorganized due to high vertical wind shear.

The next day, the system started to move northwest and crossed the island of Guam. That evening, the system was located about 370 km (250 mi) northwest of Guam, in an area of low vertical windshear and a favorable environment. A Tropical Upper Tropospheric Trough (TUTT) was located to the east of the system. At that time, the Japanese Meteorological Agency upgraded the system into a tropical depression.

Around midday on August 29th, the Joint Typhoon Warning Centre (JTWC) issued a Tropical Cyclone Formation Alert (TCFA) on the system as the Low Level Circulation Center (LLCC) became more organized. On the morning of that same day, the JTWC announced that the system had quickly developed into a tropical storm and assigned the designation “08W”.

Intensification continued, and by midday on August 30th, the JMA reported that the depression had intensified into a tropical storm and assigned its international designation “Kompasu”. In addition, PAGASA also announced that the low pressure to the northeast of Batanes had formed, and assigned its local name: “Glenda”. Six hours later, the JMA reported that Kompasu had intensified rapidly into a severe tropical storm. At the same time, the JTWC also upgraded Kompasu to a category 1 typhoon.

Typhoon Morakot/Kiko Expected to Hit Taiwan and Mainland China

25.0N 121.5E

August 7th, 2009 Category: Tropical Storms

Typhoon Morakot - August 6th, 2009

Typhoon Morakot - August 6th, 2009

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Track of typhoon Morakot - August 7th, 2009 © Univ. of Wisconsin

Track of typhoon Morakot

Typhoon Morakot (09W), also known as Kiko, located approximately 90 nautical miles south-southeast of Taipei, Taiwan has slightly intensified and tracked west-northwestward at 7 knots over the past six hours. Maximum significant wave height is 29 feet.

Animated multispectral imagery shows convective bands around the low level circulation center have tightened and slightly compacted. Upper level analysis indicates a mesoscale anticyclone over the system is enhancing radial outflow.

Typhoon Morakot will make landfall into northern Taiwan by TAU 12 and weaken due to its interaction with the island’s topography. The system will then track on a more northwestward trajectory in response to an approaching mid-level trough to the northwest. By TAU 48, TY 09w will make landfall near Fozhou, China, then rapidly dissipate.

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